while (iter != _bufferActivities.constEnd()) {
list << QVariant::fromValue<BufferId>(iter.key())
<< QVariant::fromValue<int>((int) iter.value());
while (iter != _bufferActivities.constEnd()) {
list << QVariant::fromValue<BufferId>(iter.key())
<< QVariant::fromValue<int>((int) iter.value());